Hallie has two tasks both due on the same day: math homework and a short English essay. Which should she start on first to make sure she completes her goal and doesn't waste energy? A.
She should complete her math homework first.
B.
She should write her English essay first.
C.
She should switch back and forth between the two until she's finished both.
D.
She should write her English essay that night and do her math homework in the morning.

answer: 1 and 3

step-by-step explanation:

answer: options

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94