Answer:
177 square cm
Step-by-step explanation:
The radius is half the diameter, so r=7.5 cm. Substituting into the formula for the area of a circle, 
square cm.
Answer:
£134.2 more
Step-by-step explanation:
Divide 1342 by 100
Then you get 13.42
Times that by 10 and £134.2 is 10%
12 over 15
all of them but that one simplify to 2 over 3
Answer:
$640
Step-by-step explanation:
im actually not too sure. i think thats right
Answer:
f(x) = -3(x+3)(x-1)
Step-by-step explanation:
x = -3 & 1; f(x) = 9
f(x) = a(x-r1)(x-r2)
f(0) = a(x-r1)(x-r2) = 9; 9 = a(0-(-3))(0-1)
9 = a(3)(-1); 9 = a(-3)
a = -3
f(x) = -3(x+3)(x-1)
