The number 40 can be written as the product of its prime factors like this: 40=2×2×2×5
Write the 100 as a product of its prime factors in the same way.
Write the factors in order, from smallest to largest

100 = 2*2*5*5

2 and 5 are the prime factors of 100

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b