Beck finished 30% of his homework in 12 minutes. How many minutes will it take him to complete all of his homework? Part A

Let m = the number of minutes it will take Beck to finish his homework.

Choose the equation that can be used to find a solution to the problem.

A) 0.03m = 12

B) 12m = 0.3

C) m = 0.3 × 12

D) 0.3m = 12

Part B

Use the expression from Part A to find the total number of minutes it will take Beck to complete all of his homework.

Enter your answer in the box.

minutes

The answer is 40 minutes.

Equation: If m is the total number of minutes it takes him to complete his homework, 30% of m is given by 0.3m. Since 30% was done in 12 minutes, we have 0.3m=12.

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)