15.48 + 5.16 = p because you have to do the reverse. to find "p" you have to add the amount you subtracted.
Question 7:
Diameter = 6.2 cm so Radius = 3.1 cm
A=πr² = 3.14 × 3.1² = 30.1754 cm² = 30.18 cm²
Question 8:
Circumference = 2πr
16π = 2πr
therefore 16 = 2r so r = 8cm
Answer: c ≠ {-7, -3, 2, 5}
<u>Step-by-step explanation:</u>

= 
restrictions:
c + 7 ≠ 0 c - 2 ≠ 0 c - 5 ≠ 0 c + 3 ≠ 0
c ≠ -7 c ≠ 2 c ≠ 5 c ≠ -3
Hello
there is a base charge of 10 (+10)
and each ticket is multiplied by 0.25 (0.25t)
10+0.25t
hope this helped :)