7(3x-2)+4(x+5)
= 7*(3x)-7*2+4x+4*5 (distributive property)
= 21x -14 +4x +20
= 25x +6
Final answer: 25x+6.
Hope this helps~
To calculate percentage increase. Subtract old and new value. Then divide answer by old value then multiply by 100:
289 -242 = 47
47÷ 242 × 100 = 19.4% (rounded to 2 s.f)
Parallel = same slope
y = 3x + b
5 = 3(1) + b, b = 2
Solution: y = 3x + 2
The first one, the slope is 5.
the second one, the slope is 2/3.
