Write an equivalent expression by distributing the "_' "sign outside the parentheses:
- (9r – 3.2s) + 4

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What is the number 321,000,000 in scientific notation? also what is the number? ?

Aportion of a hiking trail slopes downward at about an 84° angle. to the nearest tenth of a flot, what is the value of x, the distance the hiker traveled along the path, if he has traveled a horizontal distance of 120 feet? a. 143.3 b. 12.5 c. 120.7 d. 130.2