A phone company charges a base fee of $12 per month plus an additional charge per minute. The monthly phone cost "C" can be represented by this equation: C = 12 + (a)(m), where "a" is the additional charge per minute, and "m" is the number of minutes used. Which equation can be used to find the number of minutes a customer used if we know "a" and "C" and? (In other words, solve the equation for "m"). * m = (C-12)/a

m = (C - 12) - a

m = C - 12a

help, please!!

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

the answer is c just got it on ed

step-by-step explanation:

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.