7.which equation represents exponential growth?

a.
f
(
x
)
=
4
(
0
.
07
)
x
fx=40.07x

b.
f
(
x
)
=
2
(
0
.
44
)
x
fx=20.44x

c.
f
(
x
)
=
1
2

(
6
)
x
fx=126x

d.
f
(
x
)
=
7
(
1
2

)
x
fx=712x

Cody worked 42.5 hours per week in july. this is 12.25 hours more per week than he worked in june.how many hours did cody work per week in june?

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered