One of Jimmy’s friends told him that he would save more if, instead of multiplying the amount by 3 each week, he added enough at the end of 5 weeks to multiply the existing amount by 3. Use summation notation to write this as a sum and find the total amount he would save using this plan.

Given the function f(x) = 3x + 1, evaluate f(a + 1). a. 3a + 1 b. a + 2 c. 3a + 4

Need on this one asap im almost done with this subject

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