Answer:
f(-3)=9
Step-by-step explanation:
We want to find what f(x), or y is, when x is equal to -3.
f(x)=x^2
We want to find f(-3). Therefore, we can substitute -3 in for x.
f(-3)=(-3)^2
Evaluate the exponent. -3^2 is the same as -3*-3.
f(-3)=-3*-3
f(-3)=9
Answer:
b
Step-by-step explanation:
iS THE ANSWER
Answer:
<em>Square= 12 units</em>
<em>Triangle long sides= 19 units</em>
<em>Triamgle short side= 10 units</em>
Step-by-step explanation:
<em>It is a square, so all sides are the same. That means 3x+3 equals 4x. What number can be subsituted into x to equal 4? If x is 3, then 3x+3 would be 3(3)+3. It equals 12. 4 times 3 is also 12. It works! That also means the square's side is 12 units.</em>
<em>Square= 12 units</em>
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<u><em>So, x=3</em></u>
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<em>The triangle's longer sides are 7x-2. Subsitute x in, which is 3, and you get 7(3)-2. It equals 19. The two longer sides of the triangle are the same length, so both are 19 units.</em>
<em>Triangle long sides= 19 units</em>
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<em>The triangles shorter side is 2x+4. Subsitute 3 in for x and you get 2(3)+4. It equals 10, so the shorter side is 10 units.</em>
<em>Triangle short side= 10 units</em>
I believe the answer is A. Because x could equal the number of shirts on 3 tables, so 3x and then 9 even stacks would make sense. I hope that helps :)
Answer:
Goodluck
Step-by-step explanation: