Refer to expression 1 and expression 2. expression 1 6·7-3²·9+4³ expression 2 5+4·2+6-2·2-1 (a) what is the value of expression 1? (b) insert parentheses in expression 2 so that it has a value of 19. then show why your expression has a value of 19. i'd very much appreciate if you showed your work.

What is the value of y? round to the nearest tenth

The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.