100 100 100 100

200 200 200 200

300 300 300 300

400 400 400 400

500 500 500

Equations Word prob

Coin & CI Formula& Function

Rate, Ratio& %

500

100

200

300

400

500

100

2002 ft

These 2 triangles are similar. Write and solve an equation to

find the length of the side

called x

300X = -22.29

Solve for x. Round your answer to the nearest

hundredth.

2(.78 + .04x) = .01x

Solve for v:

-(11 – 2v) = 5(v + 8)

400v = -17

Solve for y:

500v = 1/2

A local computer center charges non members $5 per session to use the media center. If you pay a membership fee of $25, you pay only $3 per session. Write an equation that can help you decide whether to become a member. Then solve the equation.3x + 25 = 5x; 12.5 sessions 100

If one side of a square is represented by 2x + 4. If the perimeter of the square is 56 in, find x.

5 200

The sum of three numbers is 123. The second number is 9 less than two times the first number. The third number is 6 more than three times the first number. Find the three numbers.

21, 33, 69 300

3 pm400

Two trains are 515 miles apart. At 10 AM they start traveling toward each other at average rates of 48 and 55 mph. At what time will they pass each other?

Mr. Fields spent 6 hours on a trip out into the country and back. He walked out at a rate of 4 mph and walked back at a rate of 2 mph. How far out into the country did he go?

8 miles

500

Mr. Boyce deposited $170 in his bank. The number of $5 bills was three times the

number of $10 bills, and the number of $1 bills was thirty more than

the number of $5 bills. How many bills of each type did he deposit?

5, 15, 45 100

200

A purse contains $4.70 in nickels and

quarters. There are 30 coins in all. How many of each kind are there?

16 quarters and 14 nickels

Find three consecutive even integers whose sum is -18

-4, -6, -8 300

the greater of two consecutive even integers is six less than twice the smaller find both

8, 10 400

Jane has $2.80 in quarters and dimes. The number of dimes is 7 less than the number of quarters. Find the number of each. Use algebra!

500Quarters:10 , dimes 3

Solve the formula

S = B + ½ Pl

for l.

l = (2S – 2B)/P 100

Rewrite the equation

4x – 3(y – 2) = 15 + y

So that y is a function of x.

y = x – 9/4 200

Solve the Formula for Area of a trapezoid

A = ½ h(b1 + b2)

for h.

h = 2A/(b1 + b2) 300

Rewrite the equation

5y – 2(x – 7) = 20

So that x is a function of y.

x = 5/2 y - 3 400

Solve for p:

p + dp = c

p = c / (1 + d) 500

The price of gas is currently $3.59/gal. If price of gas was $3.90 last year, find the percent decrease to the nearest 10th of a percent.

7.9% decrease 100

51 200

30051

A salesperson made $900 last week in commission. If they receive a 2.5% commission rate, how much did they sell last week?

$36,000

400

Joe paid $36 for a pair of jeans that were on sale for 40% off the original price. What was the original cost of the jeans?

$60

500