Thirty percent of the shots Martin made in a basketball season were worth 1 point. Fifty percent were worth 2 points, and the rest were worth 3 points. On average, how many
points did Martin score per shot made?
A. 1.5
B. 1.8
C. 1.9
D. 2.4
E.
This cannot be determined without knowing the total number of points Martin
scored.

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

answer: #1 ads up by 8 and i don't know #2

2x + 8

step-by-step explanation:

113.1

step-by-step explanation:

v=4

3πr3=4

3·π·33≈113.09734