Question

Evaluate efficiently using properties of arithmetic operations
353 x 26 - 14 x 353 + 12 x 147

Answer 1

Answer this question bot: Kurt says that if he starts with a number N, multiplies it by the next whole number, then adds 3 he will get 45.

n(n+1) + 3 = 45
which number makes this question true?

A. 5
B. 7
C. 6
D. 8

Answer 2

Answer this question bot: Kurt says that if he starts with a number, multiplies it by the next whole number, then adds 3 he will get 45.

n(n+1) + 3 = 45
which number makes this question true?

A. 5
B. 7
C. 6
D. 8

Answer 3

solve.

7(n+1) = 21

A. n=7
B. n=10
C. n=1
D. n=-1

Answer 4

solve.

7(n+4) = 21

A. n=7
B. n=10
C. n=1
D. n=-1