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16. Tahlia has 12 cups of flour in her pantry. Each time she bakes cookies, she uses 2 cups of
Flour.
a. Write an expression that gives the cups of flour Tahlia has left in terms of n, the
number of times she has baked cookies.
FLOUR
b. Use factoring to write an equivalent expression to the expression in part a.
1
TI 2015

Respuesta :

coolstick

Answer:

a. 12 cups - 2 * n cups b. 2 * (6-n) cups

Step-by-step explanation:

a.

we start with 12 cups of flour

we subtract 2 cups of flour for each baking cycle

thus, cups of flour = 12 cups - 2 cups for each cycle

2 cups for each cycle = 2 cups * number of cycles = 2 cups * n

cups of flour = 12 cups - 2 * n cups

b.

note that 12 is a multiple of 2 -- 2 * 6 = 12

thus, 12 cups = 2* 6 cups

cups of flour = 12 cups - 2 * n cups = 2 * 6 cups - 2 * n cups

factor out the 2

cups of flour = 2 * (6-n) cups

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