Suppose you receive $100 for a graduation present, and you deposit it in a savings account. Then each week thereafter, you add $5 to the account but no interest is earned. The amount in the account is a function of the number of weeks that have passed. Write a linear function for the amount f(x) you have after x weeks.

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?