Aset of equations is given below:
equation a: a = 5b + 1
equation b: a = 3b + 5
which of the following is a step that can be used to find the solution to the set of equations?

Is the following relation a function? x y 1 4 −1 −2 3 10 5 16 yes no

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax