Last month, a truck driver made 5 round-trips to Los Angeles and some round-trips to San Diego.
Write an expression that shows how many miles he drove in all.
Identify and describe the part of the expression that shows how
many miles he drove and trips he made to San Diego.

Example

You could represent a round trip to Los Angeles with the variable: x

You could represent the number of miles in a round trip to Los Angeles with the variable: a

You could represent a round trip to San Diego with the variable: y

You could represent the number of miles in a round trip to San Diego with the variable: b

your equation would be: xa + yb

Factoring in what we know, the example equation would be:

5a + yb

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

do you have the measurements?