Answer:
Step-by-step explanation:
Apply Distributive property:
Add like terms and then add 63 to both sides of the equation:
Pick the coefficient of the x term, divide it by 2 and square it:
Add it to both sides of the equation:
Rewriting the left side as a squared binomial, we get:
Apply square root to both sides:
And finally we need to add 1 to both sides of the equation. Then we get:
Answer:
6hrs
Step-by-step explanation:
First, we have to put the information given to us about the money they earn into an expression
let x represent the number of hours Kini and Duke work and y represent the total amount of money they earn in a week.
y(kini) = 9x + 8
y(duke) = 7.5x + 17
Now we subtract the x values and the constant values
9x - 7.5x = 1.5x
17 - 8 = 9
Make these into an equation
1.5x = 9
Divide both sides by 1.5 so x(the number of hours the both work) can stand alone.
x = 6 hrs