what happens to the value of the expression 80_h as h increases from a small positive number to a large positive number

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin. how many doctors use brand x aspirin