Answer:

Step-by-step explanation:
we know that
She rides for 11.2 kilometers at a speed of 7 kilometers per hour
Using proportion
Find how many hours does she ride

Answer:D
Step-by-step explanation:
you plug 4 in for x
f(4)=4^2+2(4)-3
=16+8-3
=24-3
=21
To find the answer, multiply 22 1/2 by 3.
22 1/2 x 3 = 67 1/2
This can round up to 68
The answer is C. 68 mph
If you have any further questions feel free to ask.
Hope this helps.
Answer:
118°
Step-by-step explanation:
the angle measures of a triangle will always add up to 180
so..
42+20=62
180-62=118
2x +8=2x+8
2x-2x=8-8
0x=0
So the answer is 0