Write a variable expression for each phrase.Then evaluate the expression for a = 3, b = -2, and c = 2.5?

Question

the sum of b and 4

b + 4; -6

b + 4; 2

b + 4; 6

b + 4; -2

b plus c plus twice a

b + c + 2a; 1.5

b + c + 2a; 10.5

b + c + 2a; 6

b + c + 2a; 6.5

the sum of b and twice a

b + 2a; 1

b + 2a; 4

b + a2; 7

b + 2a; 8

Is the statement "A number is always greater than its opposite" true? Explain.

Yes; all positive numbers > all non-positive numbers.

Yes; all positive numbers are > their opposites.

No; all non-positive numbers are not > their opposites.

No; all non-positive numbers are > their opposites.

What set of numbers is reasonable to use for the number of loaves of bread a bakery bakes in one day?

irrational numbers

whole numbers

integers

rational numbers

Answer 1

b+4; 2

b+c+2a; 6.5

b+2a; 4

No; all non-positive numbers are not > their opposites.

Whole numbers