Answer:
4
Step-by-step explanation:
The slope of the line is given. It is 4. Use the equation y=mx+b to answer the other questions.
Substitute 1 in for y, 4 in for m, and 2 in for x and solve for b. The equation would look like 1=4(2)+b.
Solving that equation will give you b=-7
That means the y-intercept is -7.
The equation would then be y=4x-7
150 x 5= 750
20 x 5= 100 ... so they should expect 100 cellphones to be defective
Do you know foil? FOIL= First,Outside,Inside, and Last
