Which expression represents, six times a number plus 8 times a number?
6a + 8
6 + 8 + a + b
48(ab)
6a + 8b

The answer is 6a+8b, so *D*, hope it helps!

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3