Elena and Jada each make money by helping out their neighbors. ---Elena babysits. Her earnings are given by the equation y = 8.40x, where x represents how many hours she works and y represents how much money she earns. ---Jada earns $7 per hour mowing her neighbors’ lawns. a. Who makes more money after working 12 hours? How much more do they make? Explain how you know. b. What is the rate of change for each situation and what does it mean? c. How long would it take each person to earn $150? Explain or show your reasoning.

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

yes

step-by-step explanation:

yes

a

step-by-step explanation: