4 Long-distance calls from New York to Harare are priced at
85 cents/min off peak and $1.20/min at peak times.
a) Draw, on the same axes, conversion graphs for the two different rates.
b) From your graph estimate the cost of an 8 minute call made off peak.
C) Estimate the cost of the same call made at peak rate.
d) A call is to be made from a telephone box. If the caller has only $4 to
spend, estimate how much more time he can talk for if he rings at off
peak instead of at peak times.

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

A, at (-2, 4), is 6 .of a'? (-8, 4) (-8, -2) (-2, -2) (-2, 4) b, at (-4, -7), isy-.of b'? (-4, 7) (4, -7) (4, 7) (-4, -7)

Ican interpret and represent the remainder in division calculations sensibly for the context (eg 27.4 in calculating average height in cm: $27.44 if it represents an amount of money) solve the following problems. 15) the wildlife park charges $25.50 dollars per person to enter their park if the park made $15096 dollars today, how many people entered the park? 16) ms adams plus 2,230 other keen runners ran a marathon: between them they ran 94817.5km. how many km did each competitor run?