If C=r-8 and D=-r^{2}+8r+7, find an expression that equals 2C+2D2C+2D in standard form.

98 points djdjsi zisksis sjsjsi sisksj sksjdj sksks sjsisj

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e

$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99

3,6 and 7.

step-by-step explanation:

a) unit place of 37 is 7

so the unit place of cube of 37 will be

7³= 343=3

the answer is 3.

b) unit place of 56 is 6, so the unit place of cube of 56 will be

6³= 216=6

the answer is 6.

c) unit place of 133 is 3, so the unit place of cube of 133 will be

3³= 27= 7.

the answer is 7.