I need the answers I don’t understand it

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

Simplify the expression 8h - 57-3m by adding or subtracting the like term

Amira is told there is a trick to finding the slope within an equation in standard form,  ax+by=c.she is told she can rewrite this equation in slope-intercept form,  y=mx+b,  to find the pattern. she correctly rewrites the equation  7x+9y=14  in slope-intercept form as  y=−79x+149.which answer explains the pattern for how to find the slope using an equation in standard form? a.in slope-intercept form, the slope is  −79.these values are  a  and  b,  but with the opposite sign, so the slope of the line from the equation in standard form is  −ba.b.in slope-intercept form, the slope is  −79.these values are  a  and  b,  but with the opposite sign, so the slope of the line from the equation in standard form is  −ab.c.in slope-intercept form, the slope is  149..  these values are  c  and  a, but with the opposite sign, so the slope of the line from the equation in standard form is  −ca.d.=in slope-intercept form, the slope is  149.  these values are  c  and  b,  but with the opposite sign, so the slope of the line from the equation in standard form is  −cb.