Julie is a math tutor in the academic center. she charges $210 for the first 7 hours of tutoring and $20 for each additional hour of tutoring. if she earned $410 tutoring 1 student, how many total hours did she spent tutoring the student?

which of these equations represents this problem?

h = 7 × 410 + 210
20

h = 7 − 410 + 210
20

h = 7 − 410 − 210
20

h = 7 + 410 − 210
20

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

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step-by-step explanation:

step-by-step explanation:

well if you round, things become much more simple. round 5.95 to 6, 4.25 to 4, and 1.05 to 1. now, add 6+4+1 and that would equal 11. so the items together would equal to about $11.