Answer:
b. x + 2(x + 2) = x+2x +4 =3x+4
Step-by-step explanation:
simplify expression
(3x − 2x) + 2(2x − x) + 4 =
x + 2x + 4 =
3x+4
if x= 1 then 3x+4 =3*1+4 =3+4 = 7
if x= 3 then 3x+4 =3*3+4 =9+4 = 13
now that means when you plug in in given expressions 1 and 3 answers should be 7 and 13
or when you simplify expression it should be 3x+4 and that's b.
Answer:
27pi units^2, or about 81 units^2
Step-by-step explanation:
9^2*pi/3
81*pi/3
about 81 units^2 or
27pi units^2
A.) Let x be the number of swimming lessons she had, then
402 - 15x = 237
b.) 15x = 402 - 237 = 165
x = 165/15 = 11
She had 11 swimming lessons
c.) Let the number of lesson she had be y, then 19y = 237
y = 237/19 = 12 lessons
She can pay for 12 lessons with her remaining $237.
96/2 for tails and 96/6 for rolling 4 I assume