Answer:
25x +23
Step-by-step explanation:
2.5(10x + 8) +3
2.5(10x + 8)
25x + 20
25x + 20 + 3
25x + 23
hope dis helps ^-^
So
if x is the number she spent on each sister and y is the number she spent on each nephew then
180=3x+2y
she wants to spend 15 dollars more on sisters than nephews
so
x=15+y
solve
we have
180=3x+2y and
x=15+y
subsitute 15+y for x
180=3(15+y)+2y
180=45+3y+2y
180=45+5y
minus 45 both sides
135=5y
divide both sides by 5
27=y
solve for x
x=15+y
x=15+27
x=42
she spent $42 on each sister
your answer would be 2x - y + 3 = 0
If it’s under 90 make a acute angle of it 90 make a right angle if it’s over 90 make a obtuse angle
