# Mixed Algebra Problems

Find the slope and y-intercept for each line that has a slope and y-intercept

# 25 x + y = 5 # 47 x 3y #55 3

-- = --- y = --x --2

2 5 4

Write a formula that describes the function for each of the following.

# 7 A small pizza cost $ 5.00 plus 50 cents for each topping Express the total cost C as a function of the number of topping t.

#9 The sales tax rate on groceries in Mayberry is 9%. Express the total cost T ( including tax ) as a function of the total price of the groceries S.

# 82 Cost and toppings. The cost c in dollars for a pizza with n topping is given by

C(n) = 0.75n + 6.99

a) Find c(2), c(4),and c(5).

b) Is the cost increasing or decreasing as the number of topping increases?

Page 441 - 443

Write out the answers to these question. Use complete sentences.

# 17 y > 2/3x -3 #18 y < 1/2x + 1 # 19 y < -- 2/5x + 2

# 29 x > 9 # 40 3y - 5x > 15 # 48 -- x > 70 -- y

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Find the slope and y-intercept for each line that has a slope and y-intercept

# 25 x + y = 5

Y = 5 -x

Slope = -1, and y-intercept = 5

47)

y =

Since this would give us a horizontal line, then the slope = 0, no y-intercept

55) y =

Slope = Â¾, y-intercept = -2

Write a formula that describes the function for each of the following.

# 7 A ...

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