An ATM machine issues $10 and $20 notes only. On a particular day 66 notes had been issued, for a total value of 8970. Two simultaneous equations that can be obtained from this information are: 1+1=66
10x +20y =970
(a) What do r and y represent in these equations?
(b) Solve the equations to work out how many of each kind of note were issued​

3201

step-by-step explanation:

tangent

step-by-step explanation:

x ≥ 18 is your answer

step-by-step explanation:

let "a number" = x

(2/3)x + 17 ≥ 29

isolate the variable (x). do the opposite of pemdas (parenthesis, exponent (& root), multiplication, division, addition, subtraction).

first, subtract 17 from both sides.

(2/3)x + 17 (-17) ≥ 29 (-17)

(2/3)x ≥ 29 - 17

(2/3)x ≥ 12

next, multiply 3/2 to both sides to isolate the x

(3/2)(2/3)x ≥ 12(3/2)

x ≥ 12(3/2)

simplify. multiply, then divide

x ≥ (12 * 3)/2

x ≥ (36)/2

x ≥ 18

x ≥ 18 is your answer

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