A retired couple invested part of $12,600 at 6% interest and the rest at 7.5%. If their annual income from these investments is $831, how much was invested at each rate?

If 1 km = 0.621 miles, how many miles are in a centimeter

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each, and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent. how much did jamie pay at the end?