Joseph’s uncle wants to put shingles on the outside walls and solar panel the roof of his barn shown at the right. it costs $2.50 for each square meter of shingle, while solar panels cost $4.00 per square meter. How much will this project cost?

Irene bought 3 yards of fabric and a spool of thread for $28.10. if the spool of thread cost $1.25, how much did the fabric cost per yard?

What are the sotions to the quadratic equation 9x^2=4

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?