Which functions described below have a negative slope? Select all that apply. A. Hannah earned $60 at a part time job. Each day for 1 week she
spends $5 on snacks at the local park.
B. Pablo earns $25 per week at a part-time job. Each week he puts $5
in his savings account.
C. Jake has 8 apples. Each day he eats 1 apple.
D. Shaniqua has 30 minutes left on her pre-paid cell phone plan. Each
day she spends 10 minutes talking on the phone.

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)