Jenny makes and sells bracelets. She paid $12.75 for the materials to make 45 bracelets. If she sells every bracelet for $1.50 e
ach, how much profit will she earn?
1 answer:
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In this type of calculations, we decompose 13 by checking the lowest powers of the base, that is 40. for example we check 40^2, or 40^3 and compare it to 85
Notice
40*40*40=64,000
so we check how many time does 85 fit into 64,000:
64,000/85=752.94
85*753=64,005; 64000-64,005=-5
this means that
thus
Answer: 10 (mod85)
Remark, the set of all solutions is:
{......-75, 10, 95, .....}, that is 85k +10
Notice
40*40*40=64,000
so we check how many time does 85 fit into 64,000:
64,000/85=752.94
85*753=64,005; 64000-64,005=-5
this means that
thus
Answer: 10 (mod85)
Remark, the set of all solutions is:
{......-75, 10, 95, .....}, that is 85k +10
Treat it just like and equation at first. Multiply the 10 on both sides to get rid of it, leaving you with 50 x. Then on the number line, since there is a line under it, you would make a filled in circle and an arrow pointing towards 51 and beyond