3. (t^2) - 4
4. (1/5)*s + 4
3 7/8 because looking at the ruler, the line is 7 of the 8. hope that’s helps!
4(4x + 6) - 7 = 77 - 4x......distribute thru the parenthesis
16x + 24 - 7 = 77 - 4x ...simplify
16x + 17 = 77 - 4x ...addition property of equality....add 4x to both sides
16x + 4x + 17 = 77 ...subtraction property ...subtract 17 from both sides
16x + 4x = 77 - 17...combine like terms
20x = 60 ....division property....divide both sides by 20
x = 60/20
x = 3
4 packs of bottled water (35*4=140)
7 packs of candy bars (20*7=140)